Tap WaterIndex

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Tap water quality report

Hermosa-Old

EPA monitoring tested this supplier for 11 contaminants and detected 5. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

11
contaminants tested
5
detected
420
people served
2
health-based violations
South Dakota rankingsLead in South DakotaPFAS in South Dakota
Water source
Ground water
Ownership
Local government
Counties served
Custer

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

2
health-based violations
29
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2010-02-01
TT Health-based Resolved 2010-02-01
MON Monitoring Resolved 2025-04-01 → 2025-04-30
MON Monitoring Resolved 2025-04-01 → 2025-04-30
MR Monitoring Resolved 2021-10-01 → 2021-12-31
MR Monitoring Resolved 2021-10-01 → 2021-12-31
MR Monitoring Resolved 2021-10-01 → 2021-12-31
MR Monitoring Resolved 2021-10-01 → 2021-12-31
MR Monitoring Resolved 2021-10-01 → 2021-12-31
MR Monitoring Resolved 2021-10-01 → 2021-12-31

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Lead
0.0070 mg/L 47%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2023
Copper
269 µg/L 21%
of the EPA limit 1300 µg/L
 10/10 SYR4 2014–2017
Lead
1 µg/L 6.7%
of the EPA limit 15 µg/L
 10/10 SYR4 2014–2017
TTHM
15 µg/L 19%
of the EPA limit 80 µg/L
 2/3 SYR4 2013–2017
Gross Alpha, Excl. Radon And U
13.3 pCi/L 89%
of the EPA limit 15 pCi/L
 1/1 SYR4 2017
6 contaminants tested, none detected
Combined Radium (-226 And -228)Combined UraniumGross Beta Particle ActivityNitrateNitriteTotal Haloacetic Acids (HAA5)

Utility contact

Contact
JOHN BURCKHARD
Phone
6052554291
Email
purchase@bhtech.us

Frequently asked questions about Hermosa-Old

Is Hermosa-Old tap water safe to drink?

EPA monitoring detected 5 contaminants in Hermosa-Old's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Hermosa-Old's water?

EPA monitoring detected Lead, Copper, Lead, TTHM, Gross Alpha, Excl. Radon And U. The full list with the level and data source for each is above.

How many people does Hermosa-Old serve?

Hermosa-Old reports serving 420 people in South Dakota, per its EPA record.

Has Hermosa-Old had any water quality violations?

The EPA has 29 violations on file for Hermosa-Old, of which 2 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.